Ubiquiti UniFi US-48 Quick Start Manual page 5

LEDs
System LED
Model US-48
System LED
State
Flashing White
Steady White
Alternating
White/Blue
Steady Blue
Flashing Blue
Link/Speed/Activity
Status
Initializing.
Factory defaults, waiting for integration.
Device is busy; do not touch or unplug it.
This usually indicates that a process such
as a firmware upgrade is taking place.
Successfully integrated into a network
and working properly.
This is used to locate a device.
When you click Locate in the UniFi
Controller software, the System LED
will flash blue. The software will also
display the location of the UniFi Switch
on the map.
RJ45
SFP
Link/Speed/Activity
SFP+
Link/Speed/Activity